naval historian Timothy Mulligan describes 25 of the most historically significant U-boats. Click on the map labels and plunge into the fascinating and often tragic histories of some of Germany's ...

Nazi Germany’s feared U-boat fleet suffered a crushing blow as seven submarines were hunted down in a single day ...

Germany completed its first U-boat (the U-1) in 1905 and was the first nation to use a submarine during World War I. By comparison, the U.S. Navy commissioned its first sub (the U.S.S. Holland ...

Germany concentrated more and more effort in its U-boat fleets as the final weapon to defeat Great Britain.” If Taylor’s team could confirm the old story that the two vessels wiped each other ...